Hi, I'm Martin Tejeda

My UX journey started during a 5-month contract at a nonprofit called Data 4 Good. I was brought on as a junior designer, but quickly found myself juggling research, design, and developer handoff. I redesigned their marketing site based on usability feedback, built a UI component library from scratch, and even ran user interviews — all while learning how to advocate for accessibility and visual clarity. It was scrappy, fast-paced, and gave me my first real taste of what cross-functional collaboration could look like.

After Data 4 Good, I joined Underbelly—a design agency where I went from product designer to design lead in under two years.
Early on, I got to work with big names like Facebook and Square. At Facebook, I redesigned the admin notifications system for public figures like Beyoncé and Messi, helping their teams manage engagement more efficiently. At Square, I led the overhaul of their email design system to reduce phishing scams and build trust with sellers.

Eventually, I stepped into a leadership role, running design sprints for Fortune 500 clients and mentoring a team of four. I built modular design systems, scoped projects alongside PMs and engineers, and helped close over $800K in contracts. It was the first time I felt the impact of good design at both a craft and business level.

Next up was MDSV Capital, where I got to flex across multiple products as the in-house designer for a venture studio. I led UX for a fintech platform called Promontory, turning a flat newsfeed into a real-time investor dashboard that boosted engagement and decision-making. I also helped launch Arcoscan, a biometric age verification product, where we dropped user abandonment by over 30%. And for BackGate — a niche tool for horse show logistics — I designed a fully digital ordering flow that replaced pen-and-paper systems. It was fast-paced, high-context switching, and pushed me to build adaptable systems that could scale across very different industries.

Today, I’m at TRUE-See, a medical photography startup focused on making clinical image capture feel as intuitive as a smartphone camera. I’m leading end-to-end UX for a HIPAA-compliant photo tool, working closely with physicians to redesign outdated workflows and streamline documentation. The work has helped expand the product into hospitals and private practices — and improved both photo accuracy and compliance along the way. It's high-stakes, deeply user-focused, and a full-circle moment tying together everything I’ve learned so far.